※ 기관로그인 시 무료 이용이 가능합니다.
※ 학술발표대회집, 워크숍 자료집 중 4페이지 이내 논문은 '요약'만 제공되는 경우가 있으니, 구매 전에 간행물명, 페이지 수 확인 부탁 드립니다.
4,000원
원문정보
초록
영어
In this study, we investigated high-gradient magnetic separation as a method for separating crud in high-temperature, high-pressure water inside a nuclear reactor. Corrosion products in the coolant circulate through the system and attach to the reactor core, where they are activated by neutron irradiation. The activated corrosion products then desorb from the core and circulate through the cooling system again. The corrosion product in the reactor water or piping system is called crud. Crud is the main source of radiation exposure for radiation workers. Removal and recovery of crud is important in decommissioning plants that have been in operation for service life, and new technologies are also desired. A method for separating activated ions adsorbed on ion exchange resins in nuclear reactors using magnetic separation is developed. In this method, the ion exchange resin is washed with acid, the activated ions are adsorbed from the washing water using adsorbents, and then separated magnetically. Rudimentary experiments were conducted to investigate the possibility of this method.
목차
Abstract 1. INTRODUCTION 2. CRUD 2.1. Chemical Composition of Crud 2.2. Mechanism of Radioactive Crud Accumulation 2.3. Radioisotope Nuclides in Crud 3. DIFFERENCE OF PWRAND BWR 4. CURRENT PROCESSING METHOD 4.1. BWR 4.2. PWR 5. USED ION EXCHANGE RESIN 6. BASIC EXPERIMENTS 6.1. Handling of RI 60Co Ions 6.2. Performance Test of Adsorbing Material 6.3. Magnetic Separation Test 7. CONCLUSION ACKNOWLEDGMENT REFFEREMCES
키워드
high gradient magnetic separationnuclear reactoractivated corrosion productscrudradiation exposure of radiation worker
저자
Shigehiro Nishijima [ Fukui University of Technology, Fukui, Japan ]
Corresponding Author
Naoki Nomura [ Fukui University of Technology, Fukui, Japan ]
Fumihito Mishima [ Fukui University of Technology, Fukui, Japan ]
Tomokazu Sekine [ Industrial Clean Up Services Co., Ltd, Kawasaki, Kanagawa, Japan ]